@article{MZM_2001_70_3_a9,
     author = {K. V. Pankrashin},
     title = {Locality of {Quadratic} {Forms} for {Point} {Perturbations} of {Schr\"odinger} {Operators}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {425--433},
     publisher = {mathdoc},
     volume = {70},
     number = {3},
     year = {2001},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2001_70_3_a9/}
}